<template>
  <main class="site-content" :class="{ 'site-content--tabs': $route.meta.isTab }">
    <!-- 主入口标签页 s -->
    <el-tabs
      v-if="$route.meta.isTab"
      v-model="mainTabsActiveName"
      :closable="true"
      @tab-click="selectedTabHandle"
      @tab-remove="removeTabHandle">
      <el-dropdown class="site-tabs__tools" :show-timeout="0">
        <i class="el-icon-arrow-down el-icon--right"></i>
        <el-dropdown-menu slot="dropdown">
          <el-dropdown-item @click.native="tabsCloseCurrentHandle">关闭当前标签页</el-dropdown-item>
          <el-dropdown-item @click.native="tabsCloseOtherHandle">关闭其它标签页</el-dropdown-item>
          <el-dropdown-item @click.native="tabsCloseAllHandle">关闭全部标签页</el-dropdown-item>
          <el-dropdown-item @click.native="tabsRefreshCurrentHandle">刷新当前标签页</el-dropdown-item>
        </el-dropdown-menu>
      </el-dropdown>
      <el-tab-pane
        v-for="item in mainTabs"
        :key="item.name"
        :label="item.title"
        :name="item.name">
        <el-card :body-style="siteContentViewHeight">
          <iframe
            v-if="item.type === 'iframe'"
            :src="item.iframeUrl"
            width="100%" height="100%" frameborder="0" scrolling="yes">
          </iframe>
          <keep-alive v-else>
            <router-view v-if="item.name === mainTabsActiveName"/>
          </keep-alive>
        </el-card>
      </el-tab-pane>
    </el-tabs>
    <!-- 主入口标签页 e -->
    <el-card v-else :body-style="siteContentViewHeight">
      <keep-alive>
        <router-view/>
      </keep-alive>
    </el-card>
  </main>
</template>

<script>
    import {isURL} from '@/utils/validate'

    export default {
      data () {
        return {}
      },
      computed: {
        documentClientHeight: {
          get () {
            return this.$store.state.common.documentClientHeight
          }
        },
        menuActiveName: {
          get () {
            return this.$store.state.common.menuActiveName
          },
          set (val) {
            this.$store.commit('common/updateMenuActiveName', val)
          }
        },
        mainTabs: {
          get () {
            return this.$store.state.common.mainTabs
          },
          set (val) {
            this.$store.commit('common/updateMainTabs', val)
          }
        },
        mainTabsActiveName: {
          get () {
            return this.$store.state.common.mainTabsActiveName
          },
          set (val) {
            this.$store.commit('common/updateMainTabsActiveName', val)
          }
        },
        siteContentViewHeight () {
          var height = this.documentClientHeight - 50 - 30 - 2
          if (this.$route.meta.isTab) {
            height -= 40
            return isURL(this.$route.meta.iframeUrl) ? {height: height + 'px'} : {minHeight: height + 'px'}
          }
          return {minHeight: height + 'px'}
        }
      },
      methods: {
            // tabs, 选中tab
        selectedTabHandle (tab) {
          tab = this.mainTabs.filter(item => item.name === tab.name)
          if (tab.length >= 1) {
            this.$router.push({name: tab[0].name, query: tab[0].query, params: tab[0].params})
          }
        },
            // tabs, 删除tab
        removeTabHandle (tabName) {
          this.mainTabs = this.mainTabs.filter(item => item.name !== tabName)
          if (this.mainTabs.length >= 1) {
                    // 当前选中tab被删除
            if (tabName === this.mainTabsActiveName) {
              var tab = this.mainTabs[this.mainTabs.length - 1]
              this.$router.push({name: tab.name, query: tab.query, params: tab.params}, () => {
                this.mainTabsActiveName = this.$route.name
              })
            }
          } else {
            this.menuActiveName = ''
            this.$router.push({name: 'home'})
          }
        },
            // tabs, 关闭当前
        tabsCloseCurrentHandle () {
          this.removeTabHandle(this.mainTabsActiveName)
        },
            // tabs, 关闭其它
        tabsCloseOtherHandle () {
          this.mainTabs = this.mainTabs.filter(item => item.name === this.mainTabsActiveName)
        },
            // tabs, 关闭全部
        tabsCloseAllHandle () {
          this.mainTabs = []
          this.menuActiveName = ''
          this.$router.push({name: 'home'})
        },
            // tabs, 刷新当前
        tabsRefreshCurrentHandle () {
          var tab = this.$route
          this.removeTabHandle(tab.name)
          this.$nextTick(() => {
            this.$router.push({name: tab.name, query: tab.query, params: tab.params})
          })
        }
      }
    }
</script>

